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OverLord2011 [107]
2 years ago
11

A model rocket has an acceleration of 12 m/s2. A net force of 18 N is acting on the rocket. What is the mass of the rocket? its

a select answer, the answers are A. 30 kg B. 6.0kg C. 1.5 kg and finally D. 0.67 kg
Physics
1 answer:
larisa86 [58]2 years ago
5 0

Answer:

C.) 1.5 kg

Explanation:

Start with the equation:

F_n_e_t=ma

Plug in what you know, and solve:

18=m(12)\\m=1.5kg

Find matching soluation:

C.) 1.5 kg

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A long, East-West-oriented power cable carrying an
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Answer:

200A

Explanation:

Given that

the distance between earth surface and power cable d = 8m

when the current is flowing through cable , the magnitude flux density at the surface is 15μT

when the current flow throught is zero the magnitude flux density at the surface is 20μT

The change in flux density due to the current flowing in the power cable is

B = 20μT - 15μT

B =5μT -----(1)

The expression of magnitude flux density produced by the current carrying cable is

B=\frac{\mu_0I}{2\pi d}-----(2)

Substitute the value of flux density

B from eqn 1 and eqn 2

\frac{\mu_0I}{2\pi d}=5\times 10^-^6\\\\\frac{(4\pi \times 10^-^7)I}{2 \pi (8)} =5\times 10^-^6\\\\I=200A

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8 0
3 years ago
10.<br> Name THREE conductors and insulators with examples from everyday use.
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Answer:

Explanation:

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7 0
3 years ago
You walk exactly 250 steps North, turn around, and then walk exactly 400 steps South. How far are you from your starting
german

Answer:

150 steps south

Explanation:

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If a simple truss member is known to carry a tensile force, then the internal force drawn on a free-body at a section cut when u
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Answer: b) pointed toward and parallel to the member.

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